[tor-relays] How to reset AccountingMax stats?

[Steve Snyder]

My relay has become convinced that it has reached its AccountingMax 
limit, though actually only 71% of it (according to my ISP) has been used.

How can I reset the stats so that this miscalculation is not used for 
future configuration of expected network traffic?

Yes, I know I can just erase /var/lib/tor, but that means starting from 
a new identity.  I'm hoping that I can edit the state file to clear the 
stats.  Advice?

Thanks.